8GB (2x4GB) DDR2 800MHz SODIMM RAM Memory Upgrade Kit - Compatible with Compaq Presario CQ56 Laptop - PC2-6400 Non-ECC - Improve Performance for Gaming, Multitasking & Business Use

2pc of 4GB PC2-6400 DDR2-800 200pin SODIMM Genuine CMS brand, CMS is one of the most trusted names in the Computer Memory industry and this product carries a Lifetime Warranty from CMS. Compatible with: HP/Compaq Presario Notebook CQ56-219WM HP/Compaq Presario Notebook CQ56-103TU HP/Compaq Presario Notebook CQ56-110US HP/Compaq Presario Notebook CQ56-124LA HP/Compaq Presario Notebook CQ56-140SI HP/Compaq Presario Notebook CQ56-150EI HP/Compaq Presario Notebook CQ56-150SI HP/Compaq Presario Notebook CQ56-151SI HP/Compaq Presario Notebook CQ56-152SI HP/Compaq Presario Notebook CQ56-152SI HP/Compaq Presario Notebook CQ56-154CA HP/Compaq Presario Notebook CQ56-160EP HP/Compaq Presario Notebook CQ56-180EP HP/Compaq Presario Notebook CQ56-180SP HP/Compaq Presario Notebook CQ56-200SD HP/Compaq Presario Notebook CQ56-201TU HP/Compaq Presario Notebook CQ56-219WM Maximum Memory: 8 GB SOCKETS: 2 MODULES MUST BE ORDERED AND INSTALLED IN PAIRS for Dual Channel mode, if supported. If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation). Maximum configurations require a 64-bit operating system.